Even though Fallout 3 stuttering on Windows 10 is nothing new and has plenty of different solutions available on the internet, I still feel I need to share my experience with the game here.

What makes my case different is that when I first installed GOG's GOTY version of FO3 on my PC, it ran flawlessly. No stuttering, no frame drops and very rare crashes. Now that I've once again reinstalled the game via GOG Galaxy, I'm experiencing frequent stuttering and jerky motions in gameplay regardless of the settings I use. I've tried tinkering with the .ini file but nothing seems to make a difference. Turning vsync on and off, changing the resolution from full screen to windowed and even lowering the graphics doesn't do much of anything either. I swear, the game even stutters in the main menu, before I even load my save. What gives?

I have a GTX 1080 and a 6700k CPU, so the game should run fine. I have a 144hz g-sync monitor, but that was the case the first time around too. I haven't upgraded my hardware either. Funny thing is, when I alt-tab out of the game, the radio is suddenly playing fine, but when I go back to the game, it starts stuttering again. Nothing makes any sense. I've reinstalled my GPU drivers, too, but that didn't do anything either.

Any thoughts?

EDIT: I tried to run Fallout:NV and, yeah, it's having the same problems.

Did you forget to limit F/s to 60 because the stuttering sounds like that would be it.

Here's another possible solution:

Use the following directory path:

C:\Documents and Settings\username\my documents\my games\Fallout 3 (or Fallout 3 GOTY)

Look for the .ini file

Open it and look for the line "bUseThreadedAI = 0"

Change it to "bUseThreadedAI = 1"

Then add a line below it that goes "iNumHWThreads = 2"

Save the file and exit. Then run the game. That should fix it. It worked for me anyway.

Fallout 3/NV never ran perfectly without Galaxy, it's a stutter and bug infested "bethesda classic". But fear not, with the right mods you'll get one of the most enjoyable action RPG's of the past decade. Without stuttering.

To fix the stutter you need at least the following mods:
- Stutter remover. This fixes 90% of the stuttering. Cap you FPS at 60, sutter and bugs seems to be inevitable above it. Set "bReplaceHeap=1" and "iHeapSize = 450" in the ini file
- Unofficial patch: fixes so many crashes, bugs and a few stutter as well
- NVAC: fixes general crashes, although it doesn't reduce stutter I highly recommend it.

Thanks for all the responses, guys! Sadly, none of the solutions brought up have managed to help me so far. I've made all the changes mentioned here to the .ini file, but it's still as choppy as ever. It's a huge bummer.

Try disabling the GoG galaxy overlay, it's notorious for causing these kind of problems.